The 20 second ritual to restore eyesight is when you look at something that is 20 feet away for 20 seconds every 20 minutes which helps to reduce eye strain and especially when you are viewing a screen such as computer screen TV screen etc for a prolonged time.
The 20 second ritual for restoring eyesight is also called the 20-20-20 rule.
For every 20 minutes of focused near work such as using a computer or reading, looking at your phone etc you take a 20 second break and look at something that is 20 feet away from you.
It's a simple exercise which helps to relax your eye muscles and to reduce eye strain, which can occur when you're focusing on something that is close up for extended periods of time.
You can set a timer for 20 minutes.
And then when the timer goes off, look at something which is 20 feet away for 20 seconds and then repeat the process through the day.
To reduce eyesight when using a computer make sure the computer screen is positioned correctly and with the top of the computer screen just slightly below eye level.
And ensure that you have adequate lighting to reduce eye strain.
And consider the use of a blue light filter on your devices which can reduce the amount of blue light exposure that can cause eye strain.